Sonic Reunion is a conceptual fan game based in the Sonic the Hedgehog universe. It serves to unite numerous characters, old, new and obscure, as well as those separated through time and space. Levels spanning the series also show up. In addition to this, nearly all characters in the game can be unlocked to play at least a minor scenario with, with the exception of K2 Lou (although you can unlock his parents in his stead) and a few other very minor characters (Omochao, Dark Omochao and the ghost of Great Battle Kukku 15th).

In the game, it is possible to unlock darker, grittier storylines by spending too much time around K2 Lou, which will cause the played character to go mad and transform into a villain.

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Reappearing Characters

Characters are listed in alphabetical order as opposed to order of popularity.

Ashura the Hedgehog

Bark the Polarbear

Battle Kukku 16th "Speedy"

Battle Kukku 16th, now referred to by his people as Great Battle Kukku 16th, returns to claim his revenge against Tails after the death of his father, Great Battle Kukku 15th. Although he now leads his people, he has lost a good portion of his sanity; although it is likely caused by his grief from his father's demise and the stress of his obsessed revenge plot, given the game's circumstances it is hinted that his insanity has been influenced by K2 Lou. Despite normally not being a particularly significant threat to the world at large, the Battle Kukku Army have gained in strength and are the primary antagonists in Tails' scenario.

During "Speedy's" own gameplay scenario, he is shown to be plagued and haunted by his father's ghost. Despite wanting to move on and out from under his father's shadow, the insistent spirit of his parent refuses to leave his son alone until revenge is his against his killer, Miles "Tails" Prower. As such, Great Battle Kukku 16th sets out to find and kill the kitsune and thereby end his own suffering. Although he encounters Tails on several occasions, he fails to end the fox's life. In desperation and partially due to his waning sanity, he joins forces with the other antagonists in one final assault against the heroes and antiheroes before the battle against K2 Lou takes place. In the end, his battle cruiser is destroyed and, though thought dead by his people, he is shown to have survived the crash into the High Peaks Zone. He is at the brink of his sanity's tipping point as his father's ghost appears again and chastises him for his pathetic failure. He finally completely cracks and is last seen breaking into hysterical laughter as a blizzard rolls in and he fades from sight.

Because he is already presumably affected by K2 Lou before the game even starts up, he does not have an alternate Mad scenario, though it is somewhat hinted at him having succumbed to his madness and that he may appear in a later sequel. Also, because of the significant amount of time since his last appearance and the required update to him (since his father canonically was killed in his last appearance, thereby raising him to status of warlord of the Battle Kukku Army), his outfit has changed. While his height has been altered to resemble that of the new character design styles that have become prominent since Sonic Adventure, his clothing style has become a sort of combination of his original outfit with that of his father.

Bean the Dynamite

Big the Cat

Bionic Sonic

Black Doom

Blaze the Cat

Bomb the Mechanic

Chaos

Charmy Bee

Chief Pachacamac

Chip

Cream the Rabbit

Dark Omochao

Dark Omochao appears as the doppelganger of Omochao and as such fills a similar role to him, standing around in various zones when played by dark characters; unlike Omochao however, Dark Omochao generally is being mischievous while "idle". When touched, he will activate himself and fly around the antihero, giving hints where needed. He can be attacked, picked up and thrown at enemies, but will eventually reactivate and complain about the abuse, generally in a more threatening manner than his heroic rival. Because he simply delivers hints, he is not a playable character, although he appears officially in a few cutscenes, helping out the antiheroes there as well, most notably during the battle with K2 Lou. He is rivaled by Omochao, who aids the hero characters.

Dr. Eggman

Dr. Eggman Nega

Dr. Julian Robotnik

Dr. Qwark

E-100 α (Alpha)

E-101 β (Beta)

E-102 γ (Gamma)

E-103 Δ (Delta)

E-104 ε (Epsilon)

E-105 ζ (Zeta)

E-121 π (Phi)

E-123 Ω (Omega)

EggRobo

Emerl

Espio the Chameleon

Fang the Sniper

Froggy

Great Battle Kukku 15th

Grounder

Heavy the Mechanic

Honey the Cat

Hyper Metal Sonic

Jet the Hawk

Knuckles the Echidna

Madonna

Manic the Hedgehog

Maria Robotnik

Marine the Raccoon

Marine, native to the Sol Dimension alongside Blaze the Cat, is sucked into this dimension after she attempts to clean the inside chamber of an experimental Dimensional Spanner, accidentally pulling Blaze and Dr. Eggman Nega in when in the process of the dimensional shift. This is due to her ship, upon which the spanner is located as she was tasked (for some reason) with delivering it to the inventor's new lab, after he had set up shop in a new, presumably safer location, crashed into Eggman Nega's base of operations, where Blaze was currently battling him; the crashed occurred because Marine, scatterbrained as ever, forgot that she was also piloting the ship at the time.

As usual, Marine attempts to boss other hero characters around and is generally considered annoying to the lot of them. She does however aid in the final assault from the various antagonists as well as helping a little in the battle against K2 Lou. During her scenario she is shown to be a hydrokinetic, able to control water, shooting it from her fists as concussive shots. Her scenario involves her trying to fix the problem with the dimensional shift that she caused, only to keep digging herself into a bigger and bigger hole until she has effectively become irrevocably involved in the heroic side against K2 Lou's emergence.

If she spends too much time in the High Peaks Zone she will lose her sanity like most characters, allowing access to the non-canon Mad Marine and her dark scenario. Like other Mad characters, she is shown to consistently lose what remains of her sanity throughout this scenario as she works to stop the remaining heroes from succeeding in stopping K2 Lou. By beating this scenario along with the other Mad characters, players are given access to the non-canon Final Dark Scenario, in which K2 Lou enacts his plan on taking over the world.

Mecha Sonic

Mephiles the Dark

Metal Knuckles

Metal Sonic

Mighty the Armadillo

Miles "Tails" Prower

Omochao

Omochao appears in his typical style, standing around in various zones when played by hero characters. When touched, he will activate himself and fly around the hero, giving hints where needed. He can be attacked, picked up and thrown at enemies, but will eventually reactivate and complain about the abuse. Because he simply delivers hints, he is not a playable character, although he appears officially in a few cutscenes, helping out the heroes there as well, most notably during the battle with K2 Lou. He is rivaled by Dark Omochao, who aids the dark characters.

Princess Elise III

Professor Gerald Robotnik

Queen Aleena

Ray the Flying Squirrel

Rocket Metal

Rouge the Bat

Scourge the Hedgehog

Scratch

Shade the Echidna

Shadow the Hedgehog

Silver Sonic

Silver Sonic II

Silver the Hedgehog

Snively Robotnik

Sonia the Hedgehog

Sonic the Hedgehog

Storm the Albatross

Tails Doll

Thrash the Devil

Tiara Boobowski

Tikal the Echidna

With the Master Emerald once again splintered and cracked due to the sinister machinations of CHIMERA, Tikal has been released into the world once more alongside Chaos. Almost the same gentle pacifist as ever, she seeks to try and convince CHIMERA and others who have become swayed by K2 Lou from causing devastation to the planet. When Chaos is captured by CHIMERA she also seeks to try and find allies to release him from his captivity.

However, her time spent "merged" with Chaos in the Master Emerald has affected her personality and she has become more willing to take action against villainy herself, a bit more similar to her Sonic X appearance. It is this that allows her to . However, since she is simply a spirit she is unaffected by K2 Lou's mental manipulations; even so, she seems to appear to others on a few occasions when in truth it is a hallucination used to manipulate heroes to inadvertently help K2 Lou's cause.

Her own story scenario involves her attempt to stop K2 Lou herself by collecting shards of the Master Emerald as well as collecting the Chaos Emeralds, although at this point they have evolved into the Super Emeralds. Her time spent with Chaos has effectively begun to merge the two beings, and as such she has begun to exhibit some abilities reminiscent of Chaos' such as the ability to stretch her limbs beyond normal capacities. She also appears numerous times in Mad hero scenarios, attempting in vain to stop their freefall into insanity. She occasionally has visions of her father, Chief Pachacamac.

Vanilla the Rabbit

Vector the Crocodile

Venice the Mink

Wave the Swallow

Original Characters

Characters here are non-canon fan characters who also appear in Sonic Reunion. Though many of them are reoccurring, having appeared in other games such as Sonic the Hedgehog: Snip the Strip, they are not listed amongst the above recurring characters due to their status of not being created by SEGA themselves. They are listed in alphabetical order as opposed to order of popularity.

Alpheid the Crackshot

Blaze the Hedgehog

Despite Sonic correcting the timeline and thus erasing it occurrence from existence, K2 Lou could feel Blaze's malice through time, space and dimension. He had a direct hand in stabilizing several rifts across Desola, one of which occurred in the Beach Ruins Zone, where Blaze had been contemplating the end of his reality. Though he had all but given up on his dreams and ideals, seeing the rift open as reality around him ceased to be caused him to instinctually rush through it, only to find himself in another reality.

Crashing into this new dimension in the middle of a clothing store, Blaze found himself inadvertently donning a leather jacket and sweater combo, and burned through a city as well as an old growth forest, irreparably damaging the area in only the few minutes he had been there due in whole to his Trailblazing. He would come to use the jacket to disguise himself, hoping to surprise Sonic once he located him.

Like with Deep Mind before, Blaze would find himself easily swayed by the whispering promises for revenge that he could feel tugging at the back of his mind, goading him forward. He seemed open to the idea of corruption unlike most others goaded on by K2 Lou, and slowly lost what little sanity he had left.

Eventually, he would encounter Sonic the Hedgehog and reveal himself to his supposed father, only to be shocked and greatly hurt that Sonic had no idea who he was—he had not realized that the Sonic of his time was a future version of this Sonic who had more than likely been erased along with all of Desola. After a quick skirmish, Blaze fled the scene, emotionally reeling from the event.

For a time following this encounter, he wandered aimlessly, not only discovering several other hedgehogs but also revealing evidence that he may not be descended from Sonic, after all, which began to make more and more sense to him as he realized that Sonic would have been in stasis during the time that he was born, and that if Amy Rose was not impregnated by Sonic yet, then there was little chance she would have been earlier on, when the original time split that formed Desola would have occurred.